Gluco-Flex is an ultra-concentrated, highly palatable formula that provides a combination of 7,500 mg per ounce of pure glucosamine and 1,000 mg per ounce of MSM. The exclusive formula in Gluco-Flex will help your horse maintain normal healthy cartilage and joint function. Feeding Instructions: Feed 2 oz per day for 21 days, then 1 oz per day for maintenance. Size: 8.25 lbs. (66-132 day supply)